group webpage clicks
1      A     Old      0
2      A     Old      2
3      A     Old      0
4      A     Old      0
5      A     Old      2
6      A     Old      1
7      A     Old      1
8      A     Old      0
9      A     Old      0
10     A     Old      1
11     B     Old      3
12     B     Old      3
13     B     Old      4
14     B     Old      0
15     B     Old      0
16     B     Old      0
17     B     Old      0
18     B     Old      2
19     B     Old      1
20     B     Old      0
21     C     Old      3
22     C     Old      2
23     C     Old      3
24     C     Old      5
25     C     Old      5
26     C     Old      1
27     C     Old      1
28     C     Old      2
29     C     Old      2
30     C     Old      0
31     D     Old      1
32     D     Old      4
33     D     Old      0
34     D     Old      1
35     D     Old      4
36     D     Old      4
37     D     Old      2
38     D     Old      3
39     D     Old      2
40     D     Old      3
41     A     New      1
42     A     New      1
43     A     New      1
44     A     New      0
45     A     New      1
46     A     New      1
47     A     New      1
48     A     New      2
49     A     New      1
50     A     New      1
51     B     New      1
52     B     New      2
53     B     New      3
54     B     New      0
55     B     New      3
56     B     New      2
57     B     New      2
58     B     New      1
59     B     New      1
60     B     New      3
61     C     New      4
62     C     New      2
63     C     New      2
64     C     New      2
65     C     New      5
66     C     New      4
67     C     New      2
68     C     New      3
69     C     New      0
70     C     New      2
71     D     New      1
72     D     New      6
73     D     New      5
74     D     New      4
75     D     New      3
76     D     New      3
77     D     New      5
78     D     New      3
79     D     New      3
80     D     New      2